Police have traced a man they suspect to have been involved in the incident which led to the death of a 13-year-old boy on the M9 on Friday.
Michael Easton’s body was discovered at the side of the motorway close to the Cadgers Bridge inter shortly before 6am on Saturday morning.
Police Scotland believe that the teenager had crossed the eastbound carriageway prior to the collision with a vehicle.
Detectives’ investigations are continuing and police are keen to trace drivers who were on the M9 between 9.50pm and 10.15pm and in particular the driver of a silver Audi car travelling west, which is assessed as having been driven by a witness and was not involved in the collision.
Detective Inspector Graeme Hendry said: “We have had a good response from the public and as a result we were able to narrow down the timeframe.
“I am appealing to all drivers who were on the motorway between these times to contact the police service on 101.
“Investigations are continuing into the cause of the collision and Michael’s family have requested privacy during this time.”